Extrusion fixing structure for precoated sand shell mold casting
By designing an extruded fixing structure for coated sand shell casting in coated sand shell casting, the problem of unsolid fixing of the shell is solved, and the stability of the shell in the casting process and the quality of the casting is improved. .
Patent Information
- Application Number
- CN202323501404.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-21
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2033-12-21
AI Technical Summary
During the casting process of coated sand shell, the shell is not firmly fixed and is prone to deviation due to thermal expansion or pressure changes, affecting the quality and production efficiency of the casting.
An extruded fixing structure for casting of coated sand shell is designed. By adding additional fixing measures to the original annular shell structure, including extrusion components, bases, fastening sleeves, annular shells, fixing parts, and stops and other components to ensure that the shell remains stable during casting.
This structure can effectively prevent the shell from position deviation due to thermal stress or casting pressure, improve casting efficiency and casting quality. At the same time, through the synergy between anti-detachment and arc groove and the configuration of locking screws and locking grooves, we ensure that Stability of the fixture and accurate position of the stopper.
Smart Images
Figure CN222492140U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coated sand shell casting, in particular to an extrusion fixing structure for coated sand shell casting. Background Art
[0002] Coated sand shell casting is a traditional casting technology. Its basic process is to spread the molding sand in the sand box to make a sand mold (or shell mold) that conforms to the shape of the part. Then pour the molten metal into the sand mold, and after cooling, remove the sand mold to obtain the desired casting. In traditional coated sand shell casting, the molding sand used is usually composed of silica sand (quartz sand) and a binder (such as water glass or asphalt).
[0003] The technical solution mentioned in patent application No. 211101423U focuses on ensuring the sealing of the shell during the casting process, which is an important consideration because sealing problems may lead to leakage of gas or molten metal, thereby affecting the quality and performance of the casting. However, the patent may not fully pay attention to the importance of the firmness of the upper and lower shells in preventing the shells from shifting during the casting process.
[0004] During the casting process, the fixing of the upper and lower shells must not only consider their sealing, but also ensure that the shells can remain stable under high temperature and high pressure to prevent shell displacement due to thermal expansion or pressure changes. If the fixing is not firm, it will not only reduce production efficiency, but also may damage the castings and even endanger the safety of operators. Utility Model Content
[0005] In response to the problems existing in the above-mentioned prior art, the utility model provides an extrusion fixing structure for coated sand shell casting. On the basis of the original annular outer shell structure for placing the lower shell, additional fixing measures are added to improve the stability of the lower shell. This structure can provide additional support and restraint during the casting process, ensuring that the shell will not be displaced due to thermal stress or casting pressure, thereby improving casting efficiency and casting quality.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts an extrusion fixing structure for coated sand shell casting, which includes an extrusion component and a base arranged in the same vertical plane as the extrusion component, the base is provided with a fastening sleeve that can be axially sleeved outside the mold along the mold, the fastening sleeve has an annular outer shell with a central opening, a ring-shaped fixing part is arranged on the inner circumferential surface of the annular outer shell, and a stopper for limiting the radial movement of the fixing part is arranged at one end of the fixing part so that the inner surface of the ring-shaped fixing part contacts and fixes the mold.
[0007] The above structure adds additional fixing measures to improve the stability of the lower shell on the basis of the original annular shell structure for placing the lower shell. This structure can provide additional support and constraints during the casting process, ensuring that the shell will not be displaced due to thermal stress or casting pressure, thereby improving casting efficiency and casting quality.
[0008] As a further optimization of the above solution, the inner circumferential surface of the fixing piece is provided with anti-slip patterns to further enhance the fixing effect of the fixing piece.
[0009] As a further optimization of the above scheme, the outer circumferential surface of the fixing piece is provided with an anti-slip protrusion protruding radially, and the inner surface of the annular shell is provided with an arc groove which is a matching structure with the anti-slip protrusion, and the number of the anti-slip protrusions is at least two to prevent the fixing piece from detaching from the inside of the annular shell.
[0010] As a further optimization of the above scheme, a groove is reserved on the annular outer shell for the stop member to penetrate into, and a locking groove is provided on the side of the groove. A locking screw is installed in the above locking groove, and the locking screw passes through the locking groove and penetrates into the stop member in the groove and forms a threaded fit with the stop member, thereby ensuring that the stop member is fixed in the groove reserved in the annular outer shell during use, thereby avoiding the position of the stop member from being offset during the adjustment of the fixing member.
[0011] As a further optimization of the above solution, a strip groove is reserved on the stop member for the fixing member to penetrate, and the fastener penetrates into the strip groove from the outside to the inside. One end of the fastener is a telescopic part to adjust the fastener to move to a tightening position or a separation position and the other end is a head exposed outside the fixing member. The telescopic part and the stop member are threadedly matched to ensure the locking effect of the above fixing member.
[0012] The extrusion fixing structure for coated sand shell casting of the utility model has the following beneficial effects:
[0013] 1. The extrusion fixing structure for coated sand shell casting of the utility model adds additional fixing measures to improve the stability of the lower shell on the basis of the original annular shell structure for placing the lower shell. This structure can provide additional support and constraint during the casting process to ensure that the shell will not be displaced due to thermal stress or casting pressure, thereby improving casting efficiency and casting quality.
[0014] 2. The present invention provides an extrusion fixing structure for coated sand shell casting, which is cleverly designed and can reliably prevent the fixing member from falling out of the annular shell through the synergistic effect of the anti-slip protrusion and the arc groove. In addition, the configuration of the locking screw and the locking groove ensures that the stopper is accurately positioned in the groove of the annular shell, avoiding the problem of displacement of the stopper when adjusting the fixing member.
[0015] With reference to the following description and drawings, a specific embodiment of the present invention is disclosed in detail, indicating the manner in which the principle of the present invention can be adopted. It should be understood that the scope of the embodiment of the present invention is not limited thereby, and the embodiment of the present invention includes many changes, modifications and equivalents. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of an extrusion fixing structure for coated sand shell casting;
[0017] Figure 2 It is a structural schematic diagram of the fastening sleeve in the utility model;
[0018] Figure 3 It is a structural schematic diagram of the stopper of the utility model;
[0019] Figure 4 It is a structural schematic diagram of the anti-slip protrusion in the utility model.
[0020] In the figure: 1, extrusion component; 2, base; 3, fastening sleeve; 4, annular shell; 41, arc groove; 42, groove; 43, locking groove; 5, fixing piece; 51, anti-slip protrusion; 6, stopper; 61, strip groove; 7, locking screw; 8, fastener; 81, telescopic part; 82, head. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the scope of the utility model.
[0022] It should be noted that when an element is referred to as being "disposed on, provided with" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected, connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. "Fixed connection" means a fixed connection. There are many ways of fixed connection, which are not within the scope of protection of this article. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only and do not represent the only implementation method.
[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art of the present invention. The terms used in the specification are only for the purpose of describing specific implementations and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0024] Please refer to the instruction manual Figure 1-4 The utility model provides a first embodiment of an extrusion fixing structure for coated sand shell casting, the fixing structure comprising an extrusion component 1 and a base 2 arranged in the same vertical plane as the extrusion component 1, the base 2 is provided with a fastening sleeve 3 which can be sleeved outside the mold along the axial direction of the mold, the fastening sleeve 3 has an annular shell 4 with a central opening, a ring-shaped fixing part 5 is arranged on the inner circumferential surface of the annular shell 4, and a stopper 6 for limiting the radial movement of the fixing part 5 is arranged at one end of the fixing part 5 so that the inner surface of the ring-shaped fixing part 5 contacts and fixes the mold.
[0025] The inner circumferential surface of the fixing member 5 is provided with anti-slip patterns to further enhance the fixing effect of the fixing member 5 .
[0026] The above structure adds additional fixing measures to improve the stability of the lower shell on the basis of the original annular shell 4 structure for placing the lower shell. This structure can provide additional support and constraints during the casting process, ensuring that the shell will not be displaced due to thermal stress or casting pressure, thereby improving casting efficiency and casting quality.
[0027] Please refer to the instruction manual Figure 1-4 The utility model provides a second embodiment of an extrusion fixing structure for coated sand shell casting, the fixing structure comprising an extrusion component 1 and a base 2 arranged in the same vertical plane as the extrusion component 1, the base 2 is provided with a fastening sleeve 3 which can be sleeved outside the mold along the axial direction of the mold, the fastening sleeve 3 has an annular shell 4 with a central opening, a ring-shaped fixing part 5 is arranged on the inner circumferential surface of the annular shell 4, and a stopper 6 for limiting the radial movement of the fixing part 5 is arranged at one end of the fixing part 5 so that the inner surface of the ring-shaped fixing part 5 contacts and fixes the mold.
[0028] As a further optimization of the above scheme, the outer circumferential surface of the fixing member 5 is provided with an anti-slip protrusion 51 protruding radially, and the inner surface of the annular shell 4 is provided with an arc groove 41 that is a matching structure with the anti-slip protrusion 51. The number of the anti-slip protrusions 51 is at least two to prevent the fixing member 5 from detaching from the inside of the annular shell.
[0029] As a further optimization of the above scheme, a groove 42 is reserved on the annular shell 4 for the stop member 6 to penetrate, and a locking groove 43 is provided on the side of the groove 42. A locking screw 7 is installed in the locking groove 43, and the locking screw 7 passes through the locking groove 43 and penetrates into the stop member 6 in the groove 42 and forms a threaded fit with the stop member 6, ensuring that during use, the stop member 6 is fixed in the groove 42 reserved in the annular shell 4, thereby avoiding the position of the stop member 6 from being offset during the adjustment of the fixing member 5.
[0030] As a further optimization of the above scheme, a strip groove 61 is reserved on the stop member 6 for the fixing member 5 to penetrate, and the fastener 8 penetrates into the strip groove 61 from the outside to the inside. One end of the fastener 8 is a telescopic part 81 to adjust the fastener 8 to move to the tightening position or the separation position, and the other end is a head 82 exposed outside the fixing member 5. The telescopic part 81 is threadedly matched with the stop member 6 to ensure the locking effect of the above-mentioned fixing member 5.
[0031] The above structure is cleverly designed. Through the synergistic effect of the anti-slip protrusion 51 and the arc groove 41, the fixing member 5 can be reliably prevented from slipping out of the annular housing. In addition, the configuration of the locking screw 7 and the locking groove 43 ensures that the stopper 6 is accurately positioned in the groove 42 of the annular housing 4, avoiding the problem of displacement of the stopper 6 when adjusting the fixing member 5.
[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An extrusion fixing structure for coated sand shell casting, characterized in that: The invention comprises an extrusion component (1) and a base (2) arranged in the same vertical plane as the extrusion component (1); the base (2) is provided with a fastening sleeve (3) which can be sleeved outside the mold along the axial direction of the mold; the fastening sleeve (3) has an annular outer shell (4) with a central opening; a ring-shaped fixing member (5) is arranged on the inner circumferential surface of the annular outer shell (4); a stopper (6) for limiting the radial movement of the fixing member (5) is arranged at one end of the fixing member (5) so that the inner surface of the ring-shaped fixing member (5) contacts and fixes the mold.
2. The extrusion fixing structure for coated sand shell casting according to claim 1 is characterized in that: The inner circumferential surface of the fixing member (5) is provided with anti-slip patterns.
3. The extrusion fixing structure for coated sand shell casting according to claim 1, characterized in that: The outer circumferential surface of the fixing member (5) is provided with a radially protruding anti-slip protrusion (51), and the inner surface of the annular housing (4) is provided with an arc-shaped groove (41) that is a matching structure with the anti-slip protrusion (51).
4. The extrusion fixing structure for coated sand shell casting according to claim 3 is characterized in that: The number of the anti-slip protrusions (51) is at least two.
5. The extrusion fixing structure for coated sand shell casting according to claim 4, characterized in that: The annular housing (4) is provided with a groove (42) for the stopper (6) to penetrate deeply, and a locking groove (43) is provided on the side of the groove (42). A locking screw (7) is installed in the locking groove (43), and the locking screw (7) passes through the locking groove (43) and penetrates deeply into the stopper (6) in the groove (42) and forms a threaded fit with the stopper (6).
6. The extrusion fixing structure for coated sand shell casting according to claim 5, characterized in that: The stopper (6) is provided with a strip groove (61) for the fixing member (5) to penetrate deeply, and the fastener (8) penetrates the strip groove (61) from the outside to the inside, and one end of the fastener (8) is a telescopic part (81) for adjusting the fastener (8) to move to a tightening position or a separation position, and the other end is a head (82) exposed outside the fixing member (5).
7. The extrusion fixing structure for coated sand shell casting according to claim 6, characterized in that: The telescopic portion (81) is threadably coupled to the stopper (6).